package com.xuenci.gulimall.seckill.scheduled;/*
 *@author:xec
 *@date:2022/6/14  22:06
 */

import com.xuenci.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * 秒杀商品的定时上架
 *   每天晚上；上架最近三天需要秒杀的商品
 *   当天 00:00 - 23:59:59
 *   明天 00:00 - 23:59:59
 *   后天 00:00 - 23:59:59
 *
 */
@Slf4j
@Service
public class SeckillSkuScheduled {

    @Autowired
    SeckillService seckillService;

    @Autowired
    RedissonClient redissonClient;

    private final String upload_lock = "seckill:upload:lock";

    @Scheduled(cron = "*/3 * * * * ?")
    public void uploadSeckillSjyLatest3Days(){
        // 1、重复上架无需处理
        log.info("上架秒杀的商品信息。。。");
        // 1、分布式锁。锁的业务执行完成，状态已经跟新完成，释放锁以后，其他人获取到就会拿到最新状态
        RLock lock = redissonClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);
        try {
            seckillService.uploadSeckillSjyLatest3Days();
        }finally {
            lock.unlock();
        }
    }
}
